US6335973B1 - System and method for improving clarity of audio systems - Google Patents
System and method for improving clarity of audio systems Download PDFInfo
- Publication number
- US6335973B1 US6335973B1 US08/956,677 US95667797A US6335973B1 US 6335973 B1 US6335973 B1 US 6335973B1 US 95667797 A US95667797 A US 95667797A US 6335973 B1 US6335973 B1 US 6335973B1
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- US
- United States
- Prior art keywords
- gain
- transfer function
- frequencies
- unity
- harmonic distortion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
Abstract
Description
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/956,677 US6335973B1 (en) | 1996-01-11 | 1997-10-23 | System and method for improving clarity of audio systems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/587,126 US6023513A (en) | 1996-01-11 | 1996-01-11 | System and method for improving clarity of low bandwidth audio systems |
US08/956,677 US6335973B1 (en) | 1996-01-11 | 1997-10-23 | System and method for improving clarity of audio systems |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/587,126 Continuation-In-Part US6023513A (en) | 1996-01-11 | 1996-01-11 | System and method for improving clarity of low bandwidth audio systems |
Publications (1)
Publication Number | Publication Date |
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US6335973B1 true US6335973B1 (en) | 2002-01-01 |
Family
ID=46276187
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US08/956,677 Expired - Lifetime US6335973B1 (en) | 1996-01-11 | 1997-10-23 | System and method for improving clarity of audio systems |
Country Status (1)
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US (1) | US6335973B1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030002684A1 (en) * | 2000-06-28 | 2003-01-02 | Peavey Electronics Corporation | Sub-harmonic generator and stereo expansion processor |
US6606388B1 (en) * | 2000-02-17 | 2003-08-12 | Arboretum Systems, Inc. | Method and system for enhancing audio signals |
US20030216907A1 (en) * | 2002-05-14 | 2003-11-20 | Acoustic Technologies, Inc. | Enhancing the aural perception of speech |
US20030223588A1 (en) * | 2002-05-30 | 2003-12-04 | Trammell Earnest Lloyd | Methods and apparatus for sub-harmonic generation, stereo expansion and distortion |
US20040234083A1 (en) * | 2003-04-17 | 2004-11-25 | Naoyuki Katou | Acoustic signal-processing apparatus and method |
US20050004691A1 (en) * | 2003-07-03 | 2005-01-06 | Edwards Christoper A. | Versatile system for processing digital audio signals |
US20050175185A1 (en) * | 2002-04-25 | 2005-08-11 | Peter Korner | Audio bandwidth extending system and method |
US20060115098A1 (en) * | 2003-03-28 | 2006-06-01 | Petuhov Andrey S | Method and apparatus to reconstruct high-frequency components of an audio signal |
US20070299655A1 (en) * | 2006-06-22 | 2007-12-27 | Nokia Corporation | Method, Apparatus and Computer Program Product for Providing Low Frequency Expansion of Speech |
US20080159563A1 (en) * | 2007-01-02 | 2008-07-03 | Samsung Electronics Co., Ltd. | Method and apparatus to enhance low frequency components and medium frequency components of audio signal |
US7548875B2 (en) | 2001-06-27 | 2009-06-16 | John Mikkelsen | Media delivery platform |
US20100029261A1 (en) * | 2001-06-27 | 2010-02-04 | John Mikkelsen | Virtual wireless data cable method, apparatus and system |
US20100077022A1 (en) * | 2001-06-27 | 2010-03-25 | John Mikkelsen | Media delivery platform |
US20100191602A1 (en) * | 2001-06-27 | 2010-07-29 | John Mikkelsen | Mobile banking and payment platform |
US20100255890A1 (en) * | 2001-06-27 | 2010-10-07 | John Mikkelsen | Download management of audio and visual content, product method and system |
US7916876B1 (en) * | 2003-06-30 | 2011-03-29 | Sitel Semiconductor B.V. | System and method for reconstructing high frequency components in upsampled audio signals using modulation and aliasing techniques |
US8246384B1 (en) * | 2008-07-25 | 2012-08-21 | Wallace Henry B | Variable capacitance audio cable |
EP2237570A3 (en) * | 2009-03-30 | 2012-09-05 | Yamaha Corporation | Audio signal processing apparatus and speaker apparatus |
US9712582B2 (en) | 2001-06-27 | 2017-07-18 | Skky, Llc | Telephone initiated protocol-improved media delivery platform |
US20210375303A1 (en) * | 2015-02-01 | 2021-12-02 | Board Of Regents, The University Of Texas System | Natural Ear |
Citations (11)
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---|---|---|---|---|
US3828133A (en) | 1971-09-23 | 1974-08-06 | Kokusai Denshin Denwa Co Ltd | Speech quality improving system utilizing the generation of higher harmonic components |
US4150253A (en) | 1976-03-15 | 1979-04-17 | Inter-Technology Exchange Ltd. | Signal distortion circuit and method of use |
US5133014A (en) | 1990-01-18 | 1992-07-21 | Pritchard Eric K | Semiconductor emulation of tube amplifiers |
US5359665A (en) | 1992-07-31 | 1994-10-25 | Aphex Systems, Ltd. | Audio bass frequency enhancement |
US5422602A (en) | 1994-06-20 | 1995-06-06 | Aphex Systems, Ltd. | Frequency discriminate leveler |
US5424488A (en) | 1993-06-07 | 1995-06-13 | Aphex Systems, Ltd. | Transient discriminate harmonics generator |
US5705950A (en) * | 1996-02-15 | 1998-01-06 | Butler; Brent K. | Hybrid solid state/vacuum tube audio amplifier |
US5748747A (en) * | 1992-06-29 | 1998-05-05 | Creative Technology, Ltd | Digital signal processor for adding harmonic content to digital audio signal |
US5848165A (en) * | 1994-07-27 | 1998-12-08 | Pritchard; Eric K. | Fat sound creation means |
US6023513A (en) * | 1996-01-11 | 2000-02-08 | U S West, Inc. | System and method for improving clarity of low bandwidth audio systems |
US6111960A (en) * | 1996-05-08 | 2000-08-29 | U.S. Philips Corporation | Circuit, audio system and method for processing signals, and a harmonics generator |
-
1997
- 1997-10-23 US US08/956,677 patent/US6335973B1/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3828133A (en) | 1971-09-23 | 1974-08-06 | Kokusai Denshin Denwa Co Ltd | Speech quality improving system utilizing the generation of higher harmonic components |
US4150253A (en) | 1976-03-15 | 1979-04-17 | Inter-Technology Exchange Ltd. | Signal distortion circuit and method of use |
US5133014A (en) | 1990-01-18 | 1992-07-21 | Pritchard Eric K | Semiconductor emulation of tube amplifiers |
US5748747A (en) * | 1992-06-29 | 1998-05-05 | Creative Technology, Ltd | Digital signal processor for adding harmonic content to digital audio signal |
US5359665A (en) | 1992-07-31 | 1994-10-25 | Aphex Systems, Ltd. | Audio bass frequency enhancement |
US5424488A (en) | 1993-06-07 | 1995-06-13 | Aphex Systems, Ltd. | Transient discriminate harmonics generator |
US5422602A (en) | 1994-06-20 | 1995-06-06 | Aphex Systems, Ltd. | Frequency discriminate leveler |
US5848165A (en) * | 1994-07-27 | 1998-12-08 | Pritchard; Eric K. | Fat sound creation means |
US6023513A (en) * | 1996-01-11 | 2000-02-08 | U S West, Inc. | System and method for improving clarity of low bandwidth audio systems |
US5705950A (en) * | 1996-02-15 | 1998-01-06 | Butler; Brent K. | Hybrid solid state/vacuum tube audio amplifier |
US6111960A (en) * | 1996-05-08 | 2000-08-29 | U.S. Philips Corporation | Circuit, audio system and method for processing signals, and a harmonics generator |
Cited By (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6606388B1 (en) * | 2000-02-17 | 2003-08-12 | Arboretum Systems, Inc. | Method and system for enhancing audio signals |
US20050147254A1 (en) * | 2000-06-28 | 2005-07-07 | Coats Elon R. | Sub-harmonic generator and stereo expansion processor |
US7203320B2 (en) | 2000-06-28 | 2007-04-10 | Peavey Electronics Corporation | Sub-harmonic generator and stereo expansion processor |
US20030002684A1 (en) * | 2000-06-28 | 2003-01-02 | Peavey Electronics Corporation | Sub-harmonic generator and stereo expansion processor |
US7136493B2 (en) | 2000-06-28 | 2006-11-14 | Peavey Electronics Corporation | Sub-harmonic generator and stereo expansion processor |
US9203956B2 (en) | 2001-06-27 | 2015-12-01 | Skky Incorporated | Media delivery platform |
US7548875B2 (en) | 2001-06-27 | 2009-06-16 | John Mikkelsen | Media delivery platform |
US9319516B2 (en) | 2001-06-27 | 2016-04-19 | Skky, Llc | Media delivery platform |
US8892465B2 (en) | 2001-06-27 | 2014-11-18 | Skky Incorporated | Media delivery platform |
US9215310B2 (en) | 2001-06-27 | 2015-12-15 | Skky Incorporated | Media delivery platform |
US9712582B2 (en) | 2001-06-27 | 2017-07-18 | Skky, Llc | Telephone initiated protocol-improved media delivery platform |
US9832304B2 (en) | 2001-06-27 | 2017-11-28 | Skky, Llc | Media delivery platform |
US8908567B2 (en) | 2001-06-27 | 2014-12-09 | Skky Incorporated | Media delivery platform |
US9203870B2 (en) | 2001-06-27 | 2015-12-01 | Skky Incorporated | Media delivery platform |
US8423427B2 (en) | 2001-06-27 | 2013-04-16 | John Mikkelsen | Media delivery platform |
US9124717B2 (en) | 2001-06-27 | 2015-09-01 | Skky Incorporated | Media delivery platform |
US9219810B2 (en) | 2001-06-27 | 2015-12-22 | Skky Incorporated | Media delivery platform |
US9124718B2 (en) | 2001-06-27 | 2015-09-01 | Skky Incorporated | Media delivery platform |
US20090234915A1 (en) * | 2001-06-27 | 2009-09-17 | John Mikkelsen | Media delivery platform |
US20090234914A1 (en) * | 2001-06-27 | 2009-09-17 | John Mikkelsen | Media delivery platform |
US20100029261A1 (en) * | 2001-06-27 | 2010-02-04 | John Mikkelsen | Virtual wireless data cable method, apparatus and system |
US20100077022A1 (en) * | 2001-06-27 | 2010-03-25 | John Mikkelsen | Media delivery platform |
US9118693B2 (en) | 2001-06-27 | 2015-08-25 | Skky Incorporated | Media delivery platform |
US20100191602A1 (en) * | 2001-06-27 | 2010-07-29 | John Mikkelsen | Mobile banking and payment platform |
US9037502B2 (en) | 2001-06-27 | 2015-05-19 | Skky Incorporated | Media delivery platform |
US20100255890A1 (en) * | 2001-06-27 | 2010-10-07 | John Mikkelsen | Download management of audio and visual content, product method and system |
US8972289B2 (en) | 2001-06-27 | 2015-03-03 | Skky Incorporated | Media delivery platform |
US20050175185A1 (en) * | 2002-04-25 | 2005-08-11 | Peter Korner | Audio bandwidth extending system and method |
US20030216907A1 (en) * | 2002-05-14 | 2003-11-20 | Acoustic Technologies, Inc. | Enhancing the aural perception of speech |
US7171002B2 (en) * | 2002-05-30 | 2007-01-30 | Peavey Electronics Corporation | Methods and apparatus for sub-harmonic generation, stereo expansion and distortion |
US7242779B2 (en) | 2002-05-30 | 2007-07-10 | Peavey Electronics Corporation | Methods and apparatus for sub-harmonic generation, stereo expansion and distortion |
US20030223588A1 (en) * | 2002-05-30 | 2003-12-04 | Trammell Earnest Lloyd | Methods and apparatus for sub-harmonic generation, stereo expansion and distortion |
US20050041815A1 (en) * | 2002-05-30 | 2005-02-24 | Trammell Earnest Lloyd | Methods and apparatus for sub-harmonic generation, stereo expansion and distortion |
US20060115098A1 (en) * | 2003-03-28 | 2006-06-01 | Petuhov Andrey S | Method and apparatus to reconstruct high-frequency components of an audio signal |
US7702115B2 (en) | 2003-03-28 | 2010-04-20 | Samsung Electronics Co., Ltd. | Method and apparatus to reconstruct high-frequency components of an audio signal |
US20040234083A1 (en) * | 2003-04-17 | 2004-11-25 | Naoyuki Katou | Acoustic signal-processing apparatus and method |
CN1538784B (en) * | 2003-04-17 | 2010-08-18 | 松下电器产业株式会社 | Audible signal processing device and its method |
US7551742B2 (en) * | 2003-04-17 | 2009-06-23 | Panasonic Corporation | Acoustic signal-processing apparatus and method |
US7916876B1 (en) * | 2003-06-30 | 2011-03-29 | Sitel Semiconductor B.V. | System and method for reconstructing high frequency components in upsampled audio signals using modulation and aliasing techniques |
US20050004691A1 (en) * | 2003-07-03 | 2005-01-06 | Edwards Christoper A. | Versatile system for processing digital audio signals |
US20070299655A1 (en) * | 2006-06-22 | 2007-12-27 | Nokia Corporation | Method, Apparatus and Computer Program Product for Providing Low Frequency Expansion of Speech |
US20080159563A1 (en) * | 2007-01-02 | 2008-07-03 | Samsung Electronics Co., Ltd. | Method and apparatus to enhance low frequency components and medium frequency components of audio signal |
US8582785B2 (en) * | 2007-01-02 | 2013-11-12 | Samsung Electronics Co., Ltd. | Method and apparatus to enhance low frequency components and medium frequency components of audio signal |
US8246384B1 (en) * | 2008-07-25 | 2012-08-21 | Wallace Henry B | Variable capacitance audio cable |
EP2237570A3 (en) * | 2009-03-30 | 2012-09-05 | Yamaha Corporation | Audio signal processing apparatus and speaker apparatus |
US8638954B2 (en) | 2009-03-30 | 2014-01-28 | Yamaha Corporation | Audio signal processing apparatus and speaker apparatus |
US20210375303A1 (en) * | 2015-02-01 | 2021-12-02 | Board Of Regents, The University Of Texas System | Natural Ear |
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Legal Events
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AS | Assignment |
Owner name: U S WEST, INC., COLORADO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CASE, ELIOT M.;REEL/FRAME:008880/0733 Effective date: 19971010 |
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AS | Assignment |
Owner name: U S WEST, INC., COLORADO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MEDIAONE GROUP, INC.;REEL/FRAME:009297/0308 Effective date: 19980612 Owner name: MEDIAONE GROUP, INC., COLORADO Free format text: CHANGE OF NAME;ASSIGNOR:U S WEST, INC.;REEL/FRAME:009297/0442 Effective date: 19980612 Owner name: MEDIAONE GROUP, INC., COLORADO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MEDIAONE GROUP, INC.;REEL/FRAME:009297/0308 Effective date: 19980612 |
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Owner name: COMCAST MO GROUP, INC., PENNSYLVANIA Free format text: CHANGE OF NAME;ASSIGNOR:MEDIAONE GROUP, INC. (FORMERLY KNOWN AS METEOR ACQUISITION, INC.);REEL/FRAME:020890/0832 Effective date: 20021118 Owner name: MEDIAONE GROUP, INC. (FORMERLY KNOWN AS METEOR ACQ Free format text: MERGER AND NAME CHANGE;ASSIGNOR:MEDIAONE GROUP, INC.;REEL/FRAME:020893/0162 Effective date: 20000615 |
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